首先分析了光衰减器的光学原理，然后详细介绍了其电机定位系统。
First, it analyzed the optical theory of attenuator, then introduced the motor positioning system in detail.
用以精确测量衰减电流：运用系统辨识理论辨识衰减电流曲线的数学模型；并通过该模型推导出同步电机参数。
The mathematical models of decay current is identified by using the theory of system identification, and the parameters of synchronous machine are derived from the above mentioned models.
本文给出了一种汽轮发电机组轴系扭转振动模态对数衰减率的计算方法。
This paper presents a method for calculating the modal logarithmic decay ratio of the shaft set torsional vibration in a turbogenerator unit.
本文给出了一种汽轮发电机组轴系扭转振动模态对数衰减率的计算方法。
This paper presents a method for calculating the modal logarithmic decay ratio of the shaft set torsional vibration in a turbogenerator unit.
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